Homework Sourse1In a DNA duplex the strand that is the complement of 3GATCT
(1)In a DNA duplex, the strand that is the complement of 3’-GATCTTAA-5’ is…? Your answer should start from the 5’ end
(2)The structure of RNA is essentially....
a sugar phosphate backbone, with bases attached to ribose
a deoxyribose phosphate backbone with bases attached to the sugar
a double helix with bases attached to the sugar phosphate backbone
bases A, G, C and U attached to a string of phosphate groups
| A. | a sugar phosphate backbone, with bases attached to ribose | |
| B. | a deoxyribose phosphate backbone with bases attached to the sugar | |
| C. | a double helix with bases attached to the sugar phosphate backbone | |
| D. | bases A, G, C and U attached to a string of phosphate groups |
Solution
1. To make complement of DNA strand we use pairing rule of nucleic acids. According the rule Guanine binds with Cytosine and Adenine binds with Thymine. By applying the rule, we would get the complement sequence:
3’-GATCTTAA-5 [Parental sequence]
5’-CTAGAATT-3’ [complement sequence]
2. For second question, option ‘a’ is correct. RNA makes by ribose sugar, phosphoric acid, and nucleic acids, for that RNA calls as Ribonucleic acid. The RNA strand is single.
